Adding and recording machine.



Patented Aug. 26, 1913. f7

f 4 SHEETS-SHEET 1.

W. S. GRAFFAM.

ADDING AND RECORDING MACHINE.

APPLICATION FILED SEPT. 2a, 1903.

Patented Aug. 26, 1913.

4 SHEETS-SHEET 2.

W/ TNESSESI W. S. GRAFFAM.

ADDING AND RECORDING MACHINE. APPLICATION FILED snnuze, 1903.

| i Q 4 X Patented Aug. 26, 1913.

W/Tl/ESSESI 80. W a g m W. S. GRAFFAM.

ADDING AND RECORDING MACHINE. APPLICATION FILED SEPT. 28, 1903.

Patented Aug. 26, 1913.

4 SHEETS-SHEET 4.

BY E g nrromvsx WALTER S. GRAFFAM, 0F PROVIDENCE, RHODE ISLAND.

ADDING AND RECORDING MACHINE.

Specification of Letters Patent.

Patented Aug. 26,1913.

Application filed September 28, 1503. Serial No. 174,904.

To all whom it may concern:

Be it known that I, WALTER S. GRAFFAM, residing in the cityof Providence, State of Rhode Island, and a citizen of the United States, have invented new and useful Improvements in Adding and Recording Ma-- chines, of which the followin is a specifica-' and their engaging mechanism, parts being shown in section. Fig. 6 is a detail view showing the right side of the numeral wheel and its engaging mechanism. Fig. 7 shows the bottom view of three numeral wheels and their engaging mechanism. Fig. 8 is a cross section detail on line 8-8 of Fig. 1.

This invention relates to improvements in typewriting machines, in which numbers may be printed and added simultaneously and provides a method whereby the machine may be reversed and the numbers subtracted without the use bf complicated formula or the adding ofcomponent numbers, which results are accomplished by providing means for causing the numeral wheels to rotate backward as well as forward at the desire of the operator and to successively carry from one denomination to another when either adding or subtracting.

Referring to the drawings: 1, indicates the frame in which the entire mechanism is mounted.

2, are the numeral wheels, one for each denomination. The drawings show eight denominations and eight numeral wheels, though more or less may be employed as desired. The numeral wheels 2, are mounted on a shaft 3. I

4, are operating keys arranged in columns, one column devoted to each numeral wheel.

5, are vibrated levers, one for each column of keys 4, and pivoted at their rear ends to the frame 1.

6, are springs for returning the levers 5 after they have been depressed.

7, are toothed se ments arranged on the front end of the evers 5, and engaging pinions 8, on the shaft 3. Integral with the 'pinions 8, are ratchet wheels 9, having the same number of teeth as thepinions 8. A small pawl 10, secured to the numeral wheel 2, engages the ratchet wheel 9, by means of the spring 11.

12, is a ten-toothed pinion, mounted on he shaf 1 4, is a ten-toothed Pinion made integral with the pinion 12, and extending over to the adjoining numeral wheel 2, (see Fig. 5). e

15, is a small spring detent secured to the shaft 13, which shaft 13, is fixedly mounted 1n the frame 1, the said detent 15., serving to hold the pinions 141, and 12, in the proper posltlons.

Gear teeth 16, on the side of the numeral wheel 2, engage the teeth of the pinion 12, and on the opposite side of the numeral wheel 2, are pins 17, placed a distance apart equal to ten of the teeth 16. In the drawings the numeral wheels 2, have twenty numbers on their circumference and there are twenty teeth 16, one for each number and consequently two pins 17, to each wheel 2.v

18, is a segmental rack secured to the lever 5, and arranged to be engaged by the pinion 19, on the shaft 3. The pinion 19, is slightly larger in diameter than the pinion 8, and of slightly coarser pitch. A spring pawl 20, on the numeral wheel 2, engages a ratchet wheel 21, made integral with the pinion 19, in all respects similar to the ratchet 9, on the op osite side of the numeral wheel 2, except t at it is made to operate in the reversed direction. The shaft 3, of the numeral wheels and of the pinions 8, and 19, is mounted in a swinging frame 22, pivoted about the shaft 13. The I shaft 23, (see Fig. 2) also extends between the frame 22, and serves to stiffen the same. A small lever 24, pivoted at 25, is suitably connected to the frame 22, and serves to swing the shaft 3, so as'to cause the pinions 8, to engage the segmental rack 7, or by swinging the lever 24;, forward and causing the shaft 3, to swing forward about the shaft 13, the pini0ns1-9, will engage the segmental rack 18. From this it will be seen that the numeral wheels 2, will turn in opposite directions, dependin upon whether the lever 261, is in its forward or rearward position, and every time a numeral wheel 2, rot-ates through a distance to cause the pin 17, to pass the pinion 14, it will rotate the numeral wheel 2, to the left, a distance of .one tooth of the pinion 16, thereby raising or lowering the indicated figure on such numeral wheels by one.

The stems of the keys 4, are provided with suitable stops 26, which engage and depress lever 5, a distance sufficient to rotate the numeral wheels 2, a distance to correspond with the number on the depressed keys 4. When this has been accomplished, the bottom end 27, of the keys 4, engage the lever 28, pivoted at the rear end of the frame 1, and connected under their front ends by a link 29, to a suitable detent 30, pivoted on the shaft 23. The point of this detent enters between the teeth 16. on the side of the numeral wheel 2, in this way stopping further rotation of the numeral wheel 2.

Mounted on a suitable pivot 31, are a series of type sectors 32, one for each column of keys 4. The sectors 32, terminate in a forward extending arm 33, which is connected by a suitable link 34, to the lever 5, and so arranged that the different depressions of the lever 5, by the keys 4, bring the type on the sector 32, which corresponds to the number on the depressed key 4, to the printing line.

' &c., are adapted to be used in connection lever 36. The type sector 44, is connectedwith the recording mechanism of the machine. The keys 35, operate on a lever 36, similar to the levers 5, except that it has only one rack 37, at its forward end. This rack 37, engages a pinion 38, on the side of a wheel 39, having small pins40, arranged near its circumference. A lever 41, pivoted at the rear end of the frame 1, is connected by a link 42, to a detent 43. The depression of any key 35 will depress the lever 36, and rotate the wheel 39, until the lower end of the key 35, engages lever 41, which will draw the detent 43, between two of the pins 40, and so stop further depression of the to the lever 36, by a suitable link 45, in the same manner as the type sectors for the adding device, the difference being that the type sector 44, has as many characters on its periphery as there are keys 35, which may be greater or.less in number as desired.

Extending lengthwise of the machine, under each column of keys is a bar 46, which bars are connected by suitable cross-rods 47, extending through the entire series of bars 46, and forming a sort of grill. The crossrods 47 are connected to side pieces 48, which extend between the rods 47, and downward through the frame 1, and connected to bell-cranks 49. The rear bellcranks 49, are mount-ed upon a rock-shaft 50, and the lower ends of the hell-cranks 49, are'connected by links 511 It will be readily seen from this construction that the depression of one of the keys 4, or 35, will depress the series of bars 46, which in turn will rotate the bell-cranks 49, and so rotate the shaft 50. Secured to the shaft 50, is an arm 52, connected by a link 53, With a crank 54, mounted on a shaft 56,'and connected there with by a spring 55. Secured to the shaft 56, is a hammer 57, on the side of which is a pin 58, a catch 59 is arranged to engage the pin 58, when the hammer 57 is in its re tracted position, as shown in Fig. 2. Small arms 60 secured to the rock-shaft 61, are arranged beneath the levers 28. Adjustable pins 62, within the levers 28, are arranged to engage the arms 60, and depress the same. A suitable link 63, connects one of the arms 60, to the catch 59. A spring 64, tends to hold the catch 59, in its rearward position and in engagement with the pin 58. From this it will be seen that the depression of any key 4, will depress the lever 5, and so, rotate its corresponding numeral wheel at the same time elevate the type sector 32, a p'lm portional distance.- When the lower end 27, of the key 4, strikes the lever 28, the detent 30, will be brought into engagement with the teeth 16, of the wheel 2, and so prevent further rotation. The depression of the key 4, will also carry down the bar 46, and through its connected mechanism will rotate the shaft 50, and so draw the crank 54, into a forward position. In this position the crank 54, placesa tension on the spring 55, tending to revolve the shaft 56 in a for ward direction, but shaft 56, is held in its first position by a catch 59, engaging pin 58, on the hammer 57. WVhen the lower end 37. of the key 4, depresses the bar 28, it also causes the depression of the arm 60 and through the link 63, the release of the can-h 59, from the pin 58, which permits the l'l2llll mer 57, to spring forward and strike the type sector 32. The interposition of the paper and printing ribbon, in the manner usual in this class of machines, causes the record to be printed on the paper, corresponding to the number on the key depressed. The paper is mounted in a suitable carnage 65, WhlCh traverses laterally on rollers 66.

When it is desired to have more than one row of keys 35, for printing letters, characters, &c., duplicate rows may be intrcluced and the stems of the keys '35, made with lateral projections 67, as shown in Fig. 8, for engaging the common vibrating lever 36 and escapement lever 41. A suitable escapement 68, is arranged to be operated by the depression of a lever 41, which permits the lateral travel of the carriage 65. The rear end of the detent 43, is connected to a rod 69, which extends to a small crank 70 on shaft 61. The detent 4:3, is mounted to slide on a slot 71 and is held in its forward position by a spring 72. The depression of the key 35, will depress the lever 36 and elevate the type sector 44:. The rack 37, will rotate the wheel 39, until the lower end of the key 35, engages the lever 41, which through the link 42, will cause the detent 43, to engage between the pins 40 on the wheel 39, will push the detent 43, to its rearward position and through the rod 69, and crank 70, rotate the shaft 61, and so release the hammer 57, causing the same to print as before described in connection with the keys 4.

Having described my invention, I claim:

1. In a machine of the character described, the combination with a plurality of keys, of a rack lever and a detent lever operated thereby, a stationary shaft, a frame pivotally supported on the shaft, a plurality of numeral wheels mounted in the swinging frame, a shaft carried by the swinging frame, detents pivotally mounted on the last-mentioned shaft and adapted to engage the numeral Wheels, means connecting the detents and detent levers, means connected with the swingingframe for moving the latter and carrying means rotatably mounted on the stationary shaft, the carrying means adapted to be operated by the actuation of the numeral wheels, pinions connected with the numeral wheels and adding and subtracting racks carried by the rack lever and means for swinging the pivotal frame to -engage one or the other of said racks.

2. In a machine of the character described, the combination with a stationary shaft, of a swinging frame pivotally mounted thereon, a series of numeral wheels and pinions carried by the swinging frame, means for connecting the numeral wheels and pinions, a double rack adapted to engage the pinions to rotate the numeral wheels in opposite directions, means for throwing the swinging frame so that the pinions may engage one or the other of the racks, pins projecting from the numeral wheels, carrying wheels mounted on the stationary shaft, each carrying means comprising two pinions rigidly connected by means of a sleeve, one of the pins engaged by the pin on the numeral wheel and the other of said last-mentioned pinions engaging the next adjacent numeral wheel.

3. In a machine of the character described, the combination with a swinging frame, carrying a plurality of numeral wheels, of a stationary shaft on which the swinging frame is mounted, carryingmeans on the stationary shaft adapted to engage and operate the numeral wheels, a rack lever, a plurality of racks carried thereby, pinions with which the racks may mesh, the pinions adapted to rotate the numeral wheels in opposite directions, means for moving the swinging frame to determine the direction of rotation of the numeral Wheels, keys adapted to engage the rack lever, type carriers actuated by the rack lever, a paper carriage receiving the imprint of the type, a detent lever, also operated by the keys, means operated by the detent lever for stopping the rotation of the numeral wheels and an escapement lever operable by the detent lever to control the carriage feed.

4. In a machine of the character described, the combination with a swinging frame, a plurality of numeral wheels and pinions carried by the swinging frame and means connecting the pinions and numeral wheels, of a double rack bar adapted to engage the pinions to rotate the numeral wheels in opposite directions, means for swinging the frame to cause one or the other of the rack bars to be engaged by its pinion, a plurality of adjacent rows of keys, a lever directly operated by one row of keys, laterally extending arms mounted on the keys of the adjacent row, the lateral projections adapted to engage the lever operated by the row of keys first mentioned.

5. In a machine of the character described, the combination with a stationary shaft, of a swinging frame mounted thereon, numeral wheels carried by the swinging frame, pinions located on either side of each numeral wheel, a double rack bar for each numeral wheel, one member of the rack 'bar adapted to engage the pinion on one side of the numeral wheel and the other member adapted to engage the opposite pinion, means for transmitting motion from one numeral wheel to the next adjacent means adapted to clutch the pinions andnumeral wheels and means for shifting the swinging frame into and out of engagement with the rack members.

WALTER S. GRAFFAM. \Vitnesses:

E. C. ATKINS, L. H. TINGLEY. 

